Clarky cat is a made up drug in the same class as other imaginary drugs such as yellow bentines or triple sub it can be bought from any boz boz on the streets of urban britain, as with other imaginary drugs when you approach the boz there is an elaborate verbal dance that you need to go through with them as they pretend not to know what you are talking about, but perseverance is the key here.

Hi are you the boz boz, ahh good, do you have any yellow bentines, or triple sub, or if not any clarky cat, it has to be good though as i don't want to end up like a piano dentist, or even worse go all blutie and take a quack candle and my arms to feel like a coupe of fortnights in a bad ballon, you arn't holding any clarky cat, then give me a TB of brown and a teenth of cake.